公开(公告)号：US20150152601A1

公开(公告)日：2015-06-04

申请号：US14616910

申请日：2015-02-09

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： ZHENG TAN ,  GOPAL GOYAL ,  ALEXANDER A. KOUKOULAS

IPC: D21H21/32 ,  D21H17/64 ,  D21H11/20 ,  D21H21/22

CPC classification number: D21H21/32 ,  A61F13/531 ,  A61L15/28 ,  D21C1/00 ,  D21C1/06 ,  D21C3/00 ,  D21C3/02 ,  D21C9/10 ,  D21C11/0007 ,  D21H11/04 ,  D21H11/20 ,  D21H17/64 ,  D21H21/22

Abstract: A method of producing a modified pulp comprising treating wood chips in an extraction process to remove hemicellose to form treated wood chips; and subjecting said treated wood chips to chemical or semichemical pulping to form a modified Kraft pulp wherein the amount of hemicellulose contained in the modified Kraft pulp is from about 5 to about 10% by dry weight of the modified pulp.

公开(公告)号：US20150240423A1

公开(公告)日：2015-08-27

申请号：US14711146

申请日：2015-05-13

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： CAIFANG YIN ,  ALFRED TREPOW ,  JACEK KALKA ,  GOPAL GOYAL

IPC: D21H17/00 ,  D21H11/00

CPC classification number: D21H17/005 ,  D21C5/005 ,  D21C9/10 ,  D21C9/14 ,  D21H11/00

Abstract: A prebleach treatment of pulp with xylanase enzyme prior to chemical bleaching is disclosed. A process of making pulp comprises treating a pulp with xylanase in an amount of less than 50 g of xylanase per ton of pulp. The treating step is carried while buffering the pulp and xylanase with a buffering agent to a pH of from about 6.5 to about 7.5 prior to at least one bleaching stage to form a treated pulp.

Abstract translation: 公开了在化学漂白之前用木聚糖酶酶预漂白处理纸浆。 制造纸浆的方法包括用木糖酶处理纸浆，其量为每吨纸浆少于50g的木聚糖酶。 在至少一个漂白阶段之前，用缓冲剂将纸浆和木聚糖酶缓冲至约6.5至约7.5的pH进行处理步骤，以形成经处理的纸浆。

公开(公告)号：US20150007953A1

公开(公告)日：2015-01-08

申请号：US14306585

申请日：2014-06-17

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： ZHENG TAN ,  DAMARIS LORENZONI ,  GOPAL GOYAL ,  SEN YANG

IPC: D21H17/65 ,  D21H27/30 ,  D21H27/00

CPC classification number: D21C9/163 ,  A01N25/10 ,  A01N59/00 ,  A01N59/16 ,  A01N59/20 ,  D21C9/002 ,  D21C9/004 ,  D21H11/04 ,  D21H11/20 ,  D21H17/65 ,  D21H17/66 ,  D21H21/32 ,  D21H27/007 ,  D21H27/30 ,  Y10T428/31971

Abstract: A process comprising treating a lignocellulosic material preferably pulp in the presence of a transition metal catalyst with a oxidizing agent selected from a group consisting of hydrogen peroxide, hypochlorite, hypochlorous acid and any combination thereof to form a treated lignocellulosic material having a viscosity equal to or less than about 17 cp and having reducing functional groups selected from the group consisting of aldehyde and aldehyde type functional groups at the C6 and C1 positions but predominating at the C1 position.

Abstract translation: 一种方法，其包括在过渡金属催化剂存在下，用选自过氧化氢，次氯酸盐，次氯酸及其任何组合的氧化剂存在下处理木质纤维素材料，以形成经过处理的木质纤维素材料，其粘度等于或等于 小于约17cp并且具有选自C6和C1位置的醛和醛型官能团的还原官能团，但在C1位置占优势。

公开(公告)号：US20150119838A1

公开(公告)日：2015-04-30

申请号：US14590366

申请日：2015-01-06

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： ZHENG TAN ,  GOPAL GOYAL ,  ALEXANDER A. KOUKOULAS

IPC: D21H21/32 ,  D21H17/64 ,  A61L15/28 ,  D21H11/04

CPC classification number: D21H21/32 ,  A61F13/531 ,  A61L15/28 ,  D21C1/00 ,  D21C1/06 ,  D21C3/00 ,  D21C3/02 ,  D21C9/10 ,  D21C11/0007 ,  D21H11/04 ,  D21H11/20 ,  D21H17/64 ,  D21H21/22

Abstract: A method of producing a modified pulp for use in paper or paper web products, the method comprising treating wood chips in an extraction process to remove hemicellose to form treated wood chips; and subjecting said treated wood chips to chemical or semichemical pulping to form a modified Kraft pulp wherein the amount of hemicellulose contained in the modified Kraft pulp is from about 5 to about 10% by dry weight of the modified pulp.

Abstract translation: 一种生产用于纸或纸网产品的改性纸浆的方法，所述方法包括在萃取过程中处理木屑以除去半纤维素以形成经处理的木屑; 并对所述经处理的木屑进行化学或半化学制浆以形成改性牛皮纸浆，其中改性牛皮纸浆中所含的半纤维素的量为改性纸浆的约5至约10重量％。

公开(公告)号：US20130102984A1

公开(公告)日：2013-04-25

申请号：US13710511

申请日：2012-12-11

Applicant: International Paper Company

Inventor： ZHENG TAN ,  GOPAL GOYAL ,  ALEXANDER A. KOUKOULAS

IPC: D21C3/02 ,  A61F13/531

CPC classification number: D21H21/32 ,  A61F13/531 ,  A61L15/28 ,  D21C1/00 ,  D21C1/06 ,  D21C3/00 ,  D21C3/02 ,  D21C9/10 ,  D21C11/0007 ,  D21H11/04 ,  D21H11/20 ,  D21H17/64 ,  D21H21/22

Abstract: A method of producing a modified pulp for use in paper or paper web products, the method comprising treating wood chips in an extraction process to remove hemicellose to form treated wood chips; and subjecting said treated wood chips to chemical or semichemical pulping to form a modified Kraft pulp wherein the amount of hemicellulose contained in the modified Kraft pulp is from about 5 to about 10% by dry weight of the modified pulp.

Abstract translation: 一种生产用于纸或纸幅产品的改性纸浆的方法，所述方法包括在萃取过程中处理木屑以除去半纤维素以形成经处理的木屑; 并对所述经处理的木屑进行化学或半化学制浆以形成改性牛皮纸浆，其中改性牛皮纸浆中所含的半纤维素的量为改性纸浆的约5至约10重量％。